Re: object method call vs module call?

[Ryan <iggyvolz@...>]

Since s is a string, its metatable is the string metatable, so it inherits all methods from string.  So s.find is the same method as string.find:

> s='hello there hi'

> s.find

function: 0x4225d0

> string.find

function: 0x4225d0

So you can execute either s.find or string.find and they give the same result.  This is most useful when using the object syntax you described, since s:find('there') can be used instead of s.find(s,'there') or string.find(s,'there').

On Fri, Jun 16, 2017 at 3:36 PM, John Gabriele <jgabriele@fastmail.fm> wrote:

Hi lua-l,

I understand that:

    > s = 'hello there hi'
    > -- this
    > s:find('there')
    7       11
    > -- is the same as
    > s.find(s, 'there')
    7       11

but what exactly is going on with:

    > -- this
    > s.find(s, 'there')
    7       11
    > -- vs
    > string.find(s, 'there')
    7       11

?

Thanks,
-- John